[PD] More data structure/svg junk

[João Pais]

nice. btw, what's the cpu usage of those features, compared to normal data structures? still high, or lower than usual?

> Check it out:
> http://www.jonathanwilkes.net/more-ds.webm
>
>> * transformations with a matrix
> * svg path support for all drawing commands
> * everything plays nice with Pd's subpatch x/y-range and size (not sure about margins), making it almost >like an svg viewport (without clipping, unfortunately)
>
>> Finally-- I'm also working on a patch that will instantiate certain scalars just by typing the struct name in an >object box.  This means people will be able to use data structures for simple (or even complex) prototyping >without having to send a pointer anywhere.  If you're just using a single scalar like my demo, you could just >as easily send methods to the parent [draw] objects.  (Though if you understand how pointers work it can >be handy.)
>
>> Problems
> * getting the bbox for a path is _hard_.  I can't figure out a good way to cache it without requiring the user to >send a message.
> * matrix transformations currently do an end run around all of Pd's glist_xtopixels/basex junk and send >directly to tkpath.  This makes it way too complex to do stuff like figure out the center of a rotation.  I don't >know a good way to deal with this, other than giving a high level interface for translation/rotation/etc.
>
>> -Jonathan
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